The lonely and cold prince, who is fighting every step in the palace, and the honest and frank young general on the battlefield, are attracted to each other and push each other away across the boundary between monarch and minister and the shackles of the general. After going through the trap and the wind and snow, they find that the meeting was destined to happen in the mountain house more than ten years ago - they want to love but dare not, want to protect but can't, and finally break through the snow and return to the Huai River, embraced by the mountains and the sea.